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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1
|
pubmed:dateCreated |
1993-3-5
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pubmed:databankReference | |
pubmed:abstractText |
A broad-spectrum mercury resistance locus (mer) from a spontaneous chloramphenicol-sensitive (Cms), arginine auxotrophic (Arg-) mutant of Streptomyces lividans 1326 was isolated on a 6 kb DNA fragment by shotgun cloning into the mercury-sensitive derivative S. lividans TK64 using the vector pIJ702. The mer genes form part of a very large amplifiable DNA sequence present in S. lividans 1326. This element was amplified to about 20 copies per chromosome in the Cms Arg- mutant and was missing from strains like S. lividans TK64, cured for the plasmid SLP3. DNA sequence analysis of a 5 kb region encompassing the whole region required for broad-spectrum mercury resistance revealed six open reading frames (ORFs) transcribed in opposite directions from a common intercistronic region. The protein sequences predicted from the two ORFs transcribed in one direction showed a high degree of similarity to mercuric reductase and organomercurial lyase from other gram-negative and gram-positive sources. Few, if any, similarities were found between the predicted polypeptide sequences of the other four ORFs and other known proteins.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Dec
|
pubmed:issn |
0026-8925
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
236
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pubmed:geneSymbol |
mer
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
76-85
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:1494353-Amino Acid Sequence,
pubmed-meshheading:1494353-Base Sequence,
pubmed-meshheading:1494353-Cloning, Molecular,
pubmed-meshheading:1494353-DNA, Bacterial,
pubmed-meshheading:1494353-Drug Resistance, Microbial,
pubmed-meshheading:1494353-Genes, Bacterial,
pubmed-meshheading:1494353-Mercury,
pubmed-meshheading:1494353-Molecular Sequence Data,
pubmed-meshheading:1494353-Sequence Analysis, DNA,
pubmed-meshheading:1494353-Sequence Deletion,
pubmed-meshheading:1494353-Sequence Homology, Amino Acid,
pubmed-meshheading:1494353-Species Specificity,
pubmed-meshheading:1494353-Streptomyces
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pubmed:year |
1992
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pubmed:articleTitle |
Cloning and DNA sequence analysis of the mercury resistance genes of Streptomyces lividans.
|
pubmed:affiliation |
Institut für Genetik und Mikrobiologie, Universität München, FRG.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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